about training error.

[xxx2974]

Hello, when I try to train the program,it got some errors:
How can I slove it?

The details:
Current lr 0.01
Traceback (most recent call last):
File "train.py", line 165, in
main(args)
File "train.py", line 64, in main
train(trainloader, net, criterion, opt, epoch)
File "train.py", line 81, in train
for i, ((feat, adj, cid, h1id), gtmat) in enumerate(loader):
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/site-packages/torch/utils/data/dataloader.py", line 280, in next
idx, batch = self._get_batch()
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/site-packages/torch/utils/data/dataloader.py", line 259, in _get_batch
return self.data_queue.get()
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/Queue.py", line 168, in get
self.not_empty.wait()
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/threading.py", line 340, in wait
waiter.acquire()
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/site-packages/torch/utils/data/dataloader.py", line 178, in handler
_error_if_any_worker_fails()
RuntimeError: DataLoader worker (pid 31687) is killed by signal: Killed.
Exception in thread Thread-1:
Traceback (most recent call last):
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/threading.py", line 801, in __bootstrap_inner
self.run()
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/threading.py", line 754, in run
self.__target(*self.__args, **self.__kwargs)
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/site-packages/torch/utils/data/dataloader.py", line 71, in _worker_manager_loop
r = in_queue.get()
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/multiprocessing/queues.py", line 378, in get
return recv()
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/site-packages/torch/multiprocessing/queue.py", line 22, in recv
return pickle.loads(buf)
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/pickle.py", line 1388, in loads
return Unpickler(file).load()
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/pickle.py", line 864, in load
dispatchkey
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/pickle.py", line 1139, in load_reduce
value = func(*args)
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/site-packages/torch/multiprocessing/reductions.py", line 68, in rebuild_storage_fd
fd = multiprocessing.reduction.rebuild_handle(df)
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/multiprocessing/reduction.py", line 155, in rebuild_handle
conn = Client(address, authkey=current_process().authkey)
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/multiprocessing/connection.py", line 175, in Client
answer_challenge(c, authkey)
File "/home/xiaozhenzhen/anaconda2/envs/gcn_pytorch/lib/python2.7/multiprocessing/connection.py", line 432, in answer_challenge
message = connection.recv_bytes(256) # reject large message
IOError: [Errno 104] Connection reset by peer

Exception NameError: "global name 'FileNotFoundError' is not defined" in <bound method _DataLoaderIter.del of <torch.utils.data.dataloader._DataLoaderIter object at 0x7f77d1c11650>> ignored